Study on the kinetics of cerium(III) adsorption-desorption on different soils of China

被引：40
作者：
Li, DC
Huang, SB
Wang, WH
Peng, A
机构：
[1] Chinese Acad Sci, SKLEAC, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
[2] Shenyang Agr Univ, Shenyang 110161, Peoples R China
来源：
CHEMOSPHERE | 2001年 / 44卷 / 04期
关键词：
Ce(III); soils; adsorption-desorption; kinetics;
D O I：
10.1016/S0045-6535(00)00357-X
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The kinetics of Ce(III) adsorption-desorption on four typical soils in China has been studied by using the batch method with the radioactive nuclide Ce-141. Results indicated that Ce(III) adsorption was rapid and nearly finished in less than 0.5 min. Desorption procedure was about completed in 1-30 min in the tested soils. Ce(III) desorption equilibrium times vary with different soils. The amounts of Ce(III) desorption on different soils in the same time were different. The Elovich equation proved to be the best models for fitting the data of Ce(III) desorption reactions in fluvoaquic soil and black soil; and the parabolic-diffusion equation was the best model in red earth and loess soil. (C) 2001 Elsevier Science Ltd. All rights reserved.
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页码：663 / 669
页数：7
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